PART VIII MACHINERY AND EQUIPMENT — Drilling equipment - general requirements
112
An employer shall ensure that before drilling
112(a)
the back, face and sides of the work area have been scaled and stabilized;
112(b)
the working face and surrounding area have been thoroughly washed; and
112(c)
remnants of holes have been inspected for explosives and distinctively marked.
Not legal advice. Verify the cited article against the signed agreement.